Geophysical response of unconformities and petroleum geological significance in the eastern Qaidam Basin

doi:10.7623/syxb200706007

Editorial office of ACTA PETROLEI SINICA ›› 2007, Vol. 28 ›› Issue (6): 32-36.DOI: 10.7623/syxb200706007

• Petroleum Exploration • Previous Articles Next Articles

Geophysical response of unconformities and petroleum geological significance in the eastern Qaidam Basin

Gao Changhai, Zha Ming, Qu Jiangxiu, Wu Kongyou, Zhao Weiwei

Faculty of Geo-Resources and Information, China University of Petroleum, Dongying 257061, China

Received:2006-11-20 Revised:2007-06-11 Online:2007-11-25 Published:2013-07-10

柴达木盆地东部不整合结构的地球物理响应及油气地质意义

高长海, 查明, 曲江秀, 吴孔友, 赵卫卫

中国石油大学地球资源与信息学院, 山东东营, 257061

作者简介:高长海,男,1977年5月生,1998年毕业于大庆石油学院,现为中国石油大学(华东)在读博士研究生,主要从事油气成藏机理与分布规律研究.E-mail:gch260725@163.com.
基金资助:
中国石油化工集团公司重点科技攻关项目(2004KY10031)成果

Abstract

Abstract: Several unconformities were resulted from the multiple tectonic movements in the eastern Qaidam Basin.Those unconformities can be divided into five types of unconformity with different reflection characteristics in seismic sections.In the vertical,the unconformity structures can be divided into three layers.Every layer consists of several kinds of rocks with different logging responses in electro-facies.These unconformities are good pathways for oil and gas migration and can provide good accommodation for oil and gas accumulation.Although reservoir-forming conditions of the unconformity are similar,the different type of unconformity shows different oil and gas reservoir-forming pattern due to the different stress behavior and deformation level.

Key words: eastern Qaidam Basin, unconformity structure, geophysical response, reservoir space, hydrocarbon migration pathway, reservoir-forming pattern

摘要： 柴达木盆地东部经历了多期次构造运动,形成了多个不整合。这些不整合在剖面上可分为5种类型,它们在地震上具有明显的反射特征。在纵向上,不整合划分为3层结构,每层结构发育着多种岩石类型,在测井曲线组合上具有各自不同的响应。不整合纵向的分层结构构成油气运移的双重通道,同时为油气聚集提供了良好的储集空间和圈闭条件。尽管不整合的成藏条件有共同之处,但由于形成各类不整合时的应力强度、应力作用方式及地层变形程度均存在差异,导致不同类型的不整合具有各自不同的油气成藏模式。

关键词: 柴达木盆地东部, 不整合结构, 地球物理响应, 储集空间, 油气运移通道, 成藏模式

CLC Number:

TE122.33

Gao Changhai, Zha Ming, Qu Jiangxiu, Wu Kongyou, Zhao Weiwei. Geophysical response of unconformities and petroleum geological significance in the eastern Qaidam Basin [J]. Editorial office of ACTA PETROLEI SINICA, 2007, 28(6): 32-36.

高长海, 查明, 曲江秀, 吴孔友, 赵卫卫. 柴达木盆地东部不整合结构的地球物理响应及油气地质意义[J]. 石油学报, 2007, 28(6): 32-36.

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Geophysical response of unconformities and petroleum geological significance in the eastern Qaidam Basin

柴达木盆地东部不整合结构的地球物理响应及油气地质意义

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